package com.sky.mapper;

import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Update;

import java.util.List;
@Mapper
public interface ShoppingCartMapper {
    /**
     * 查询购物车内数据
     * @param shoppingCart
     * @return
     */
//    select * from shopping_cart  where user_id=? and setmeal_id=?
//    select * from shopping_cart  where user_id=? and dish_id=? and dish_flavor=xx
    List<ShoppingCart> list (ShoppingCart shoppingCart);

    //根据菜品id修改这个菜品的数量
    @Update("update shopping_cart set number =#{number} where id =#{id}")
    void updateNumberById(ShoppingCart cart);

    /**
     * 插入购物车数据
     * @param shoppingCart
     */
    @Insert("insert into shopping_cart (name, user_id, dish_id, setmeal_id, dish_flavor, number, amount, image, create_time) " +
            "values (#{name}, #{userId}, #{dishId}, #{setmealId}, #{dishFlavor}, #{number}, #{amount}, #{image}, #{createTime})")
    void insert(ShoppingCart shoppingCart);

    /**
     * 清空购物车
     * @return
     */
    @Delete("delete from shopping_cart where user_id = #{userId}")
    void deleteByUserId(Long userId);

    //根据id删除此菜品
    @Delete("delete from shopping_cart where id =#{id}")
    void deleteById(Long id);

    /**
     * 批量插入购物车数据
     *
     * @param shoppingCartList
     */
    void insertBatch(List<ShoppingCart> shoppingCartList);
}
